Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions. Inventions That Changed Our World People have been inventing things for years. Paper was invented about 2,000 years ago. The wheel was invented more than 5,000 years ago. What would life be like without paper to write on or bikes to ride? Those inventions have made life easier. Airplane The Wright Brothers invented the first airplane in December 1903. That makes 2003 the 100th anniversary ! Before the airplane was invented, most people traveled by cars, boats, and trains. Today, airplanes help people travel faster. How do airplanes help you? Telephone Alexander Graham Bell invented the telephone in 1876. Before the telephone was invented, people kept in touch by writing letters or talking in person. Today the telephone makes it easier for people to talk to one another. How do telephones help you? Automobile The first four-wheeled gas-powered car was invented by Karl Benz in 1891. Before people had cars, they couldn’t travel easily. They walked or rode horses for short trips. They took trains or boats for long trips. Today cars are one of the main ways people travel. How do cars help you? Computer People worked for years to make the first computer. It was built in 1946. The first computer was called ENIAC. Today computers are an important part of many people’s lives. People use computers as tools to write, get information, and much more. How do computers help you? Question 21. The primary purpose of this passage is to describe ________. A: some inventions that have made a big difference. B: the invention of the airplane in December 1903. C: the reasons why Karl Benz invented the gas-powered car. D: some ways that computers help to make our lives easier.

Viết đoạn văn từ 10 đến 12 câu theo cách lập luận diễn dịch để làm rõ tâm trạng và tình cảm của tác giả trước họa mất nước

1/ Vì sao nói dây thần kinh tủy là dây pha ?

Bộ phận nào mà trên lớp tế bào biểu bì có những lỗ khí đóng mở được. * Thân Rễ Hoa Lá

2/Vì sao nói sợi hướng tâm là sợi cảm giác? Sợi li tâm là sợi vận động ?

Giúp mh câu này với mình cần gấp 5 sao cho bạn nhanh nhất

cho 2 đa thức : P(x)= -5 x ³ -1/3 + 8$x^{4}$ - x² và Q(x)= x ² -5x - 2x ³ - $x^{4}$ - 2/3 Tính P + Q và P - Q

ai làm nhanh giúplàm xong tick luôn

Complete the sentences, using although, despite, in spite of, however, or nevertheless. Sometimes, two answers are possible. 1.__it was raining heavily, he went out without a raincoat. 2. My father is very busy.____ , he is always willing to give a hand with the housework. 3. Some English words have the same pronunciation ___they are spelled differently, for example, dear and deer. 4. I was cold and wet.____ , Bob put on his swimming suit and went to the beach. 5. I think I did OK in my speech last night______I’d had almost no sleep for 24 hours. 6. Carol arrived at the meeting______I asked her not to be there. 7. The sky was grey and cloudy.________ , we went to the beach. 8. It looks like they’re going to succeed________ their present difficulties. 9. _______there was no electricity, I was able to read because I had a candle. 10.______ I heard the telephone ring, I didn’t answer it.

Bài tập liên hệ : Em hãy liên hệ thực tế kể về 1 tấm gương dũng cảm dám thực hiện quyền khiếu nại và tố cáo để bảo vệ lợi ích của địa phương ( có thể là của lợi ích trường lớp em đang học) ? HS liên hệ kể và rút ra bài học từ tấm gương trên.